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Message-Id: <1340988354-26981-6-git-send-email-vincent.sanders@collabora.co.uk>
Date: Fri, 29 Jun 2012 17:45:44 +0100
From: Vincent Sanders <vincent.sanders@...labora.co.uk>
To: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
"David S. Miller" <davem@...emloft.net>
Cc: Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
Vincent Sanders <vincent.sanders@...labora.co.uk>
Subject: [PATCH net-next 05/15] security: selinux: Add AF_BUS socket SELinux hooks
From: Javier Martinez Canillas <javier.martinez@...labora.co.uk>
Add Security-Enhanced Linux (SELinux) hook for AF_BUS socket address family.
Signed-off-by: Javier Martinez Canillas <javier.martinez@...labora.co.uk>
Signed-off-by: Vincent Sanders <vincent.sanders@...labora.co.uk>
---
security/selinux/hooks.c | 35 +++++++++++++++++++++++++++++++++++
1 file changed, 35 insertions(+)
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 4ee6f23..5bacbe2 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -67,6 +67,7 @@
#include <linux/quota.h>
#include <linux/un.h> /* for Unix socket types */
#include <net/af_unix.h> /* for Unix socket types */
+#include <net/af_bus.h> /* for Bus socket types */
#include <linux/parser.h>
#include <linux/nfs_mount.h>
#include <net/ipv6.h>
@@ -4101,6 +4102,39 @@ static int selinux_socket_unix_may_send(struct socket *sock,
&ad);
}
+static int selinux_socket_bus_connect(struct sock *sock, struct sock *other,
+ struct sock *newsk)
+{
+ struct sk_security_struct *sksec_sock = sock->sk_security;
+ struct sk_security_struct *sksec_other = other->sk_security;
+ struct sk_security_struct *sksec_new = newsk->sk_security;
+ struct common_audit_data ad;
+ struct lsm_network_audit net = {0,};
+ int err;
+
+ ad.type = LSM_AUDIT_DATA_NET;
+ ad.u.net = &net;
+ ad.u.net->sk = other;
+
+ err = avc_has_perm(sksec_sock->sid, sksec_other->sid,
+ sksec_other->sclass,
+ UNIX_STREAM_SOCKET__CONNECTTO, &ad);
+ if (err)
+ return err;
+
+ /* server child socket */
+ sksec_new->peer_sid = sksec_sock->sid;
+ err = security_sid_mls_copy(sksec_other->sid, sksec_sock->sid,
+ &sksec_new->sid);
+ if (err)
+ return err;
+
+ /* connecting socket */
+ sksec_sock->peer_sid = sksec_new->sid;
+
+ return 0;
+}
+
static int selinux_inet_sys_rcv_skb(int ifindex, char *addrp, u16 family,
u32 peer_sid,
struct common_audit_data *ad)
@@ -5643,6 +5677,7 @@ static struct security_operations selinux_ops = {
.unix_stream_connect = selinux_socket_unix_stream_connect,
.unix_may_send = selinux_socket_unix_may_send,
+ .bus_connect = selinux_socket_bus_connect,
.socket_create = selinux_socket_create,
.socket_post_create = selinux_socket_post_create,
--
1.7.10
--
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